Improvement in lathe for turning hubs



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Letters Patent No; 94,200, dated ug'ust 31, 1869. I

IMPBO'V'IEMENT IN LATHE FOR TURNING HUBS.

The Schedule referred to in these Letters Patent and making part of the saaie.

To who/ml it may concer-n:

Beit known that I, ANDREW GOODYEAR, of Albion, in the county of Calhoun, and State f Michigan, have invented a new and luseful Improvement in Hub- 'lurning Machines and I do declare that the following is a true and accurate description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, and being a part of this specification, in which- Figure l isa rear perspective view of my inventionf" Figure 2 is aperspective view of the cutters from the front side of the apparatus; y

Figure 3 is an elevation of the same, from the right side;

Figure 4 is a top view of the cup-morrlder and its attachments l Figure 5 is an elevation; and

Figure 6 is an end view ofthe same.

Like letters refer to like parts in each figure.

This invention relates to an improved machine for turning hubs, and consists in the employment of a steady-rest, of peculiar construction, fory preventing chattering in the hub while being turned, and also in the combination and arrangement of the various parts.

The details of construction and manner of opera- -tion will he f ully described hereinaiter.

A, in the drawings, represents the frame-of my hub-lathe;

li, the head-block; and

C, the tail-block, which last is adjusted longitudinally, for turning hubs of various lengths.

D is the liye spindle, rotated hy its fast pulley E, and provided with a ysquare socket for the reception of one end of a tapered mandrel, which is driven I through the hub, while its opposite end'is centred on the tail-spindle F. I

G is a carriage, travelling longitudinally in ways on the top of the frame A, and operated by the screw H.

J is a transverse carriage or slide-rest, travelling in suitable ways across the carriage G, and is operated by the hand-lever K, or any suitable device.

L is a stop-screw, projecting` inward from the rear side of the frame, for determiningthe travel of tle slide-rest, which has a rubber or other elastic cushion, M, fixed at its point of contact with the stop L, vtov enable the operator to take a very thin shaving from the per-iph'ery of the hub while iinishingit. U is a steady-rest, having its lower end pivoted t0 adjustable ears below the transverse carriage J, and its upper' -end provided with a friction-roller pressing against the hub, supporting and 'steadying' itwhile turning, and producing a smoothly-finished hub withont chatters or tool-marks, the back of the lever being held te place by the fulcrum T, secured to an adjustable arm projecting'from the head-block, and pressing against the said fulcrum when the transverse carriage is drawn fback.

At the front' side of the transverse carriage J are secured the tool-posts 0, P, Q, R, and4 S, adjustable with relation to each other and the carriage, the toolpost O carrying a knife, c, and spur, d, for cutting on", the inner end of the hub.

P has its upper face inclined longitudinally and laterally, so that its knife f, having a bevelled edge, will turn the band-place of the hub with a drawingcut, while its spur g cuts oli' the illet at the swell.

The tool-post Q is so arranged that its knives hij will have a similar drawing-cut while turning the body and mouldings ofthe hub.

The toolpost It, with its knife m' and spur n, is similarly arranged for turning the outer band-place, and

The tool-post S is similar in construction, and its knife 19 and spur q serve a similar purpose to those on the post O. V

rlhe hub-being turned by the i cutters as described,

it is necessary to form a cup in its outer end. To

effect this, in proper longitudinal ways z, on the front side of the tail-block, I place a cutter-head, s, sliding freely therein, and having secured to its outer end a moulding-iron, XV, of theproper form to plane out the cup.

The cutter-head is moved hack and forth by the i hand-leverY, as shown.

To regulate the depth of the'cup, a-stop', X, is secured to the cutter-head, and is adjustable by means of slots, through which the screws holding it to the cutter-head pass. .y

l It will be seen, iir'st, that by the peculiar arrangement of the knives yand cutters in this apparatus, a drawing-cut will be produced in turning hubs therein; and, secondly, that all its parts are adjust able, enabling it to turn the various sizes of hirbs required. y

Wha-t I claim as my invention, and desire to'secure by Letters Patent, is-

1. The lever-guide U, with or without a frictioni roller, in connection with the fulcrum T, for steadying the hub while being turned, arranged and operating substantially a's and for the purposes set forth.

2 In a hub-turning machine, of substantiallyA the described construction, the curved, inclined, and b evelled-edged knives, in combination with the guide U and fulcrum T, as described forvthe purpose set forth.

ANDREW GOODYEAR.

Witnesses:

H. E. EBnR'rs, L. O. HYDE. 

